25139130500523 has 32 divisors (see below), whose sum is σ = 37675324169280. Its totient is φ = 14808139407360.

The previous prime is 25139130500503. The next prime is 25139130500537. The reversal of 25139130500523 is 32500503193152.

It is a happy number.

It is not a de Polignac number, because 25139130500523 - 2¹⁶ = 25139130434987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (25139130500503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148233958 + ... + 148403451.

It is an arithmetic number, because the mean of its divisors is an integer number (1177353880290).

Almost surely, 2^{25139130500523} is an apocalyptic number.

25139130500523 is a deficient number, since it is larger than the sum of its proper divisors (12536193668757).

25139130500523 is a wasteful number, since it uses less digits than its factorization.

25139130500523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296637519.

The product of its (nonzero) digits is 121500, while the sum is 39.

Adding to 25139130500523 its reverse (32500503193152), we get a palindrome (57639633693675).

The spelling of 25139130500523 in words is "twenty-five trillion, one hundred thirty-nine billion, one hundred thirty million, five hundred thousand, five hundred twenty-three".